Stay updated with real-time air quality in Pekin, Illinois featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
43
Good
Pekin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.98 μg/m³
0
55
155
255
425
605+
45.55 ppb
0
55
71
86
201
201+
0.83 ppb
0
36
76
186
605
1005+
2.72 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Pekin, Illinois
Pekin, Illinois
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AQI 44
Good
5.41μg/m³
PM2.5
24.93μg/m³
PM10
47.24ppb
O3
0.90ppb
SO2
2.60ppb
NO2
0.17ppm
CO
AQI 43
Good
5.22μg/m³
PM2.5
23.20μg/m³
PM10
45.98ppb
O3
0.90ppb
SO2
2.61ppb
NO2
0.17ppm
CO
AQI 40
Good
4.39μg/m³
PM2.5
27.46μg/m³
PM10
43.06ppb
O3
0.91ppb
SO2
2.64ppb
NO2
0.17ppm
CO
AQI 40
Good
4.37μg/m³
PM2.5
22.61μg/m³
PM10
43.31ppb
O3
0.91ppb
SO2
2.63ppb
NO2
0.17ppm
CO
AQI 41
Good
4.56μg/m³
PM2.5
17.93μg/m³
PM10
44.11ppb
O3
0.91ppb
SO2
2.29ppb
NO2
0.18ppm
CO
AQI 39
Good
4.20μg/m³
PM2.5
22.41μg/m³
PM10
42.42ppb
O3
0.97ppb
SO2
2.73ppb
NO2
0.20ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Pekin, Illinois are available every hour.
Pekin, Illinois experienced its worst air quality at 09:00:00, 2026-07-23.
The best air quality in Pekin, Illinois was observed at 03:00:00 on 2026-07-23.
The air quality in Pekin, Illinois right now is Good, with an AQI of 43.
In Pekin, Illinois, O3 is the most frequently found pollutant.
When air quality in Pekin, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Pekin, Illinois currently has a PM2.5 concentration of 5.535 μg/m3.
Pekin, Illinois currently has a PM10 concentration of 24.84 μg/m3.
The current carbon monoxide (CO) level in Pekin, Illinois is 0.172 ppm.
The current sulfur dioxide (SO2) concentration in Pekin, Illinois is 0.915 ppb.
Pekin, Illinois currently has an ozone (O3) concentration of 45.613 ppm.
The current level of nitrogen dioxide (NO2) in Pekin, Illinois is 2.629 ppb.
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